JP2015208306A - Transplanting apparatus and transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology that reduces the weight of a transplanting apparatus and suppresses the wear of members.SOLUTION: A transplanting apparatus comprises an extrusion rod, a lateral feed belt, a vertical feed belt, a feeding claw, a power transmission unit 50, and a power conversion unit. The power transmission unit 50 transmits power inputted inside a first case 391 to a plurality of output shafts. The plurality of output shafts include a feeding claw output shaft 56 and a first rotary shaft 57. The power conversion unit converts rotational power of the first rotary shaft 57 extending to the right and left into linear motion power inside a second case, and outputs the power to an extrusion rod output shaft. The extrusion rod output shaft transmits the power to the extrusion rod without converting the power. By this configuration, there is no need to provide another power source for driving the feeding claw and provide the power conversion unit and a power amplifier unit at the outside of the case. Thus, it is possible to reduce the number of components and the weight of a transplanter. Also, since mechanisms which correspond to the power conversion unit and the power amplifier unit are provided in the case, the wear of members are less likely to occur.

Description

  The present invention relates to a transplant device and a transplant machine.

  Conventionally, as a transplanter for transplanting seedlings such as rice and vegetables into a field, a transplanter for transplanting pot seedlings grown in a seedling box to the field is known. A conventional transplanter for transplanting rice seedlings into rice fields is described in, for example, Patent Document 1.

  In the transplanter for rice described in Patent Document 1, as shown in FIG. 11, the pot seedling accommodated in the seedling box transported along the seedling box transporting path 81 is taken out from the seedling box by the push rod 82. . Then, the pot seedling taken out from the seedling box is transferred to the lateral feed belt 84 by changing the direction by the seedling receiving base 83. The pot seedlings conveyed in the left-right direction from the lateral feed belt 84 fall along the guide plate 85 from the downstream end of the lateral feed belt 84, and are held by the planting claws 87 provided in the rotary case 86. Transplanted to. These parts are supplied with driving force by transmitting and converting driving force input from the outside to a plurality of output shafts inside the mission case 88.

  If the power transmission mechanism is provided outside the transmission case, wear occurs at the contact points between the members, which causes a reduction in driving force transmitted to each part or vibration. For this reason, it is desirable that the power transmission mechanism be accommodated in a mission case in which lubricating oil can be sufficiently interposed between the contact portions of the members as much as possible.

Japanese Patent No. 5392624

  However, in the conventional transplanter, a large amplification mechanism for amplifying the linear reciprocating motion in the front-rear direction for driving the push rod is provided outside the mission case. For this reason, there is a problem that wear is likely to occur at the contact point of each member of the amplification mechanism. Moreover, in order to amplify linear motion, since it had the large amplification mechanism, the weight of the transplant device was increased.

  On the other hand, in the case of a transplanting apparatus for transplanting seedlings such as vegetables in a field, as shown in FIG. 2, a vertical feeding belt 42 that conveys pot seedlings downward from the downstream end of the lateral feeding belt 41 instead of a guide plate. In place of a rotary case having a planting claw, a planting ring 372 is provided. Further, the vegetable transplanting device has a feeding claw (see FIG. 5) in order to push the pot seedling into the space between the pair of vertical feeding belts 42 from the downstream end of the lateral feeding belt 41. The other mechanisms such as the seedling box conveyance path, the push rod, the seedling receiving stand, and the lateral feed belt have the same configuration as that of the rice transplanting apparatus.

  Thus, if the transplanting device for rice and the transplanting device for vegetables are designed using as common members as possible, the production efficiency can be improved. Therefore, it is desirable to manufacture a transplanting device for rice in a transplanting device for vegetables without changing the configuration of the transplanting device for rice as much as possible. However, if the power transmission mechanism for rice is simply diverted as it is, a power transmission mechanism or power generation mechanism for the feed claw is provided outside the mission case, which causes problems such as wear of the mechanism and weight increase of the transplant device. There is a fear.

  This invention is made | formed in view of such a situation, and it aims at providing the technique which suppresses abrasion of a member while reducing a transplant apparatus weight.

  In order to solve the above problems, a first invention of the present application is a transplanting apparatus for transplanting a plurality of pot seedlings held in a seedling box to a field, and has a plurality of transporting mechanisms for moving the seedling box. An extrusion rod for extruding the pot seedling from the seedling box conveyed on the path, the seedling box conveying path, a transverse feed belt for transporting the pot seedling taken out from the seedling box in the left-right direction, and the lateral A seedling feed belt portion having a longitudinal feed belt for transporting the pot seedling downward on the downstream side of the feed belt, and a feed claw for pushing the pot seedling from the downstream end of the lateral feed belt to the vertical feed belt; A planting portion, a first case, a second case, and a plurality of output shafts that receive input power are planted in the field on the downstream side of the vertical feed belt. To A power transmission unit, and a power conversion unit that converts reciprocating rotational power into linear motion power inside the second case, and the plurality of output shafts of the power transmission unit are configured to send the feed A feed claw output shaft that transmits rotational power to the claw, and a first rotation shaft that transmits reciprocating rotational power to the power converter, wherein the power converter extends in the left and right directions. The reciprocating rotational power of the moving shaft is converted into linear motion power in the front-rear direction and output to the push rod output shaft, and the push rod output shaft transmits the push rod to the push rod without converting the power, and the push rod At the same time, it performs linear reciprocating motion in the longitudinal direction.

  A second invention of the present application is the transplanting device according to the first invention, wherein the power conversion unit is directly connected to a pinion provided around the first rotation shaft and the output shaft of the push rod, and is provided in the front-rear direction. And a rack arranged in

  A third invention of the present application is the transplanting device of the first invention or the second invention, wherein the power transmission portion extends in the front-rear direction and inputs rotational power, and rotation of rotational power of the input shaft. A rotation direction conversion mechanism that converts the direction, and a conversion shaft that extends in the left-right direction and rotates by transmitting the rotational power of the input shaft via the rotation direction conversion mechanism, and the output claw output shaft Extends in the left-right direction, and rotational power is transmitted from the conversion shaft via a gear.

  A fourth invention of the present application is the transplanting device according to the third invention, further comprising a seedling receiving platform for placing the pot seedling extruded from the seedling box and transferring the pot seedling to the lateral feed belt. The plurality of output shafts of the power transmission unit outputs a rotational power to the planting unit, a planting unit output shaft, and a seedling table output shaft that outputs the rotational power to the seedling table, A second rotating shaft that outputs reciprocating rotational power to the transport mechanism, and the power transmission unit includes a first cam mechanism and a second cam mechanism that convert rotational power into reciprocating rotational power. Further, the rotational power of the conversion shaft is transmitted to the planting part output shaft via a gear provided around the planting part output shaft and a gear provided around the conversion shaft. A gear provided around the seedling cradle output shaft, and a gear provided around the conversion shaft; The rotational power of the conversion shaft is transmitted to the seedling cradle output shaft via a gear provided around the feed claw output shaft, a gear provided around the conversion shaft, and interposed therebetween The rotational power of the conversion shaft is transmitted to the delivery claw output shaft via two gears, and the rotational power of the seedling receiver output shaft is transmitted to the first rotational shaft via the first cam mechanism. It is converted into reciprocating rotational power, and the rotational power of the seedling cradle output shaft is converted into reciprocating rotational power of the second rotational shaft through the second cam mechanism.

  A fifth invention of the present application includes a transplant device according to any one of the first to fourth inventions, and a traveling unit that includes the transplant device and has traveling power, and the power transmission unit includes: The transplanter receives a power branched from the traveling power.

  According to the first to fifth inventions of the present application, it is not necessary to provide another power source for driving the delivery claw by outputting the power to the delivery claw via the power transmission unit. As a result, the number of parts is reduced and the transplanter can be reduced in weight. In addition, power directly acting on the push rod is output from the inside of the case. Thereby, it is not necessary to provide a power conversion part or a power amplification part outside the case. Therefore, the transplant device can be reduced in weight. In addition, since oil is interposed between the connection parts inside the case, if there is a mechanism corresponding to the power conversion part / power amplification part in the case in this way, there is a problem due to wear of these parts. Hard to occur.

  In particular, according to the second invention of the present application, since the rack-pinion structure is adopted in the power conversion unit, the rotational power of the rotating shaft can be converted into a large forward and backward reciprocating linear motion. Thereby, it is not necessary to amplify the power from the power conversion unit outside the case.

It is a side view of the transplanter concerning one embodiment. It is a side view of the transplantation device concerning one embodiment. It is a partial side view of the seedling extraction part and seedling transfer part which concern on one Embodiment. It is a partial side view of the seedling extraction part and seedling transfer part which concern on one Embodiment. It is a perspective view of the seedling transfer part and planting part 37 which concern on one Embodiment. It is the figure which showed arrangement | positioning of each member seen from the left-right direction of the power transmission part of one Embodiment. It is AA arrow sectional drawing of the power transmission part of one Embodiment. It is BB arrow sectional drawing of the power transmission part of one Embodiment. It is a top view of a power conversion part and an extrusion rod of one embodiment. It is the figure which showed arrangement | positioning of each member seen from the left-right direction of the power converter of one Embodiment. It is the figure which showed the internal structure of the conventional mission case.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the present application, the advancing direction of the transplanter and the transplanting device is referred to as “forward direction”, and the direction opposite to the advancing direction of the transplanter and the transplanting device is referred to as “rearward direction”. Moreover, in this application, the up-down direction is defined according to the attitude | position at the time of use of a transplant machine and a transplant apparatus.

<1. First Embodiment>
<1-1. About the configuration of the entire transplanter>
FIG. 1 is a side view of the transplanter 1. FIG. 2 is a side view of the transplantation device 3. This transplanter 1 is a device for transplanting a plurality of onion pot seedlings grown in a seedling box to a field 9. As shown in FIG. 1, the transplanter 1 according to the present embodiment includes a traveling unit 2 and a transplant device 3.

  The traveling unit 2 includes a plurality of wheels 21 and a traveling vehicle body 22 that is supported by the wheels 21 so as to freely travel. The traveling vehicle body 22 is provided with a driver's seat 23 on which an operator is seated, an operation unit 24 including a handle, various levers, and the like, and an elevating device 25 that attaches the transplanter 3 so as to be movable up and down.

  At the time of transplanting the pot seedling, the transplanting machine 1 moves the traveling vehicle body 22 forward by the wheel 21, and the transplanting device 3 takes out the pot seedling from the seedling box and sequentially transplants it to the field 9. The transplanter 1 according to the present embodiment is a so-called rear-mount riding type transplanter in which the transplanter 3 is disposed behind the traveling unit 2.

  The lifting device 25 is attached to the traveling unit 2 so that the transplanting device 3 can be lifted and lowered. The lifting device 25 includes an upper link 251 and a lower link 252. As for the upper link 251 and the lower link 252, the front end part is fixed to the traveling vehicle body 22 so that rotation is possible, and the rear end part is fixed to the transplanter 3 so that rotation is possible. The lifting device 25 rotates the upper link 251 and the lower link 252 using the hydraulic pressure of a hydraulic pressure generator (not shown) fixed to the traveling vehicle body 22. Thereby, the transplanting device 3 moves up and down with respect to the traveling unit 2.

  In this embodiment, the raising / lowering device 25 lowers the transplanting device 3 to a position where a lower end portion of a planting unit 37 to be described later contacts the field 9 as shown in FIG. Thereby, the pot seedling can be planted at an appropriate depth in the field 9. Moreover, the raising / lowering device 25 raises the transplanting device 3 at the time of movement or turning without transplanting the pot seedling. Thereby, it is suppressed that the transplant apparatus 3 contacts with a road and the agricultural field 9.

  The transplanting device 3 is a device that takes out the pot seedling from the seedling box and transplants it to the field 9. As shown in FIG. 1, the transplanting device 3 is attached to the back of the traveling vehicle body 22 via a lifting device 25 so as to be lifted and lowered. Moreover, as shown in FIG. 2, the transplant apparatus 3 includes a first seedling box transport path 31, a second seedling box transport path 32, a seedling takeout section 33, an empty box transport path 34, an empty box storage section 35, and a seedling transport section. 36, a planting part 37, and a pressure-reducing roller 38.

  The transplanting device 3 of the present embodiment includes a first seedling box transport path 31, a second seedling box transport path 32, a seedling takeout section 33, an empty box transport path 34, an empty box storage section 35, and a seedling transport section 36, respectively. Two on each side. Moreover, the transplant device 3 of the present embodiment has four planting parts 37.

  The first seedling box transport path 31, the second seedling box transport path 32, the seedling take-out section 33, the empty box transport path 34, the empty box storage section 35, and the seedling transport section 36 are respectively divided into two seedling boxes and pot seedlings. Since the planting part 37 can transplant one row of pot seedlings, the transplant device 3 of this embodiment can transplant all four pot seedlings at the same time.

  The first seedling box transport path 31, the second seedling box transport path 32, and the empty box transport path 34 are transport paths for transporting the seedling box. Each of the first seedling box transport path 31, the second seedling box transport path 32, and the empty box transport path 34 is provided with a transport mechanism 30 that transports the seedling box placed on each transport path.

  The front end of the first seedling box transport path 31 is a supply port 310 through which the seedling box is supplied to the first seedling box transport path 31. The seedling box supplied from the supply port 310 is transported on the first seedling box transporting path 31 and is transferred to the second seedling box transporting path 32 as indicated by a solid line arrow in FIG. When the seedling box reaches a certain height on the second seedling box conveyance path 32, the traveling direction is changed, and the seedling box is obliquely downward on the second seedling box conveyance path 32 as shown by a broken line arrow in FIG. It is conveyed to.

  In the vicinity of the lower end portion of the second seedling box conveyance path 32, a seedling removal portion 33 is disposed. The seedling extraction unit 33 extracts the pot seedling from the seedling box that passes through the lower end of the second seedling box transport path 32.

  The seedling box that has been emptied after the pot seedling has been taken out proceeds to the empty box conveyance path 34. The empty box transport path 34 moves downward from the seedling take-out part 33 and then changes direction, passes behind and above the first seedling box transport path 31 and the second seedling box transport path 32 to the empty box storage part 35. Reach. In this way, the seedling box that has been emptied after passing through the seedling extracting unit 33 is transported on the empty box transporting path 34 and collected in the empty box storage unit 35.

  On the other hand, the pot seedlings taken out from the seedling box in the seedling taking-out part 33 are transferred to the planting part 37 one by one by the seedling transferring part 36 and transplanted to the field 9 in the planting part 37.

  The pressure reducing roller 38 is a leveling roller disposed in front of the planting portion 37. By arranging the pressure-reducing roller 38 in front of the planting part 37, the transplanter 1 can transplant seedlings without leveling the farmed field.

<1-2. About composition of seedling removal part, seedling transfer part and planting part>
Next, detailed configurations of the seedling extraction unit 33, the seedling transfer unit 36, and the planting unit 37 will be described. 3 and 4 are partial side views of the seedling take-out part 33 and the seedling transfer part 36. FIG. FIG. 5 is a perspective view of the seedling transfer unit 36 and the planting unit 37.

  As described above, the transplant device 3 of the present embodiment has two seedling extraction units 33 and two seedling transfer units 36 on the left and right sides, and four planting units 37. Here, the structure of the one seedling taking-out part 33, the one seedling transfer part 36, and the two planting parts 37 is demonstrated.

  As shown in FIG. 2, the seedling extraction unit 33 has a plurality of push rods 331 arranged substantially horizontally. As shown in FIG. 3, the push rod 331 is inserted into the notches provided on the bottom surfaces of the seedling growing chambers two-dimensionally arranged in the seedling box, thereby allowing the pusher bar 331 to move on the second seedling box transport path 32. The root part of the pot seedling held in the seedling box to be conveyed is pushed out from the seedling box. Thereby, a pot seedling is taken out from a seedling box.

  As shown in FIGS. 2 to 4, the seedling transfer unit 36 includes a seedling receiving base 361, a seedling feeding belt unit 362, and a feeding claw 363 (see FIG. 5). The seedling receiving base 361 places a plurality of pot seedlings simultaneously pushed out of the seedling box by the plurality of pushing rods 331, and transfers them to the seedling feeding belt portion 362 while changing the direction. The seedling feeding belt portion 362 includes a lateral feeding belt 41 that transports pot seedlings in the left-right direction, and two vertical feeding belts 42 that transport pot seedlings downward on the downstream side of the lateral feeding belt 41. The feed claw 363 feeds the pot seedling from the downstream end of the lateral feed belt 41 to the vertical feed belt 42.

  As shown in FIG. 3, the plurality of pot seedlings pushed out of the seedling box by the push rod 331 are placed on the seedling receiving base 361 in such a direction that the leaf part is the front and the root part is the rear. The seedling cradle 361 that holds a plurality of pot seedlings descends while rotating, thereby changing the direction of the pot seedlings so that the leaf part is the rear and the root part is the front as shown in FIG. Then, the seedling receiving base 361 releases each pot seedling at a predetermined position, whereby a plurality of pot seedlings fall onto the lateral feed belt 41.

  As shown in FIG. 5, the lateral feed belt 41 includes a right lateral feed belt 411 that transports pot seedlings to the right side, and a left lateral feed belt 412 that transports pot seedlings to the left side. The right lateral feed belt 411 transports the pot seedling placed thereon in the right direction, and the left lateral feed belt 412 transports the pot seedling placed thereon in the left direction.

  The two vertical feed belts 42 are disposed below the downstream end portion of the right lateral feed belt and below the downstream end portion of the left lateral feed belt. In FIG. 5, of the two longitudinal feed belts 42, only the left lateral feed belt is shown. Each of the longitudinal feeding belts 42 is composed of two belts 421 on the left and right sides. Accordingly, the vertical feed belt 42 transports the pot seedling downward while sandwiching the pot seedling between the two left and right belts 421.

  The feeding claw 363 pushes the pot seedling that has dropped from the downstream end of the lateral feeding belt 41 onto the vertical feeding belt 42 between the two left and right belts 421 of the vertical feeding belt 42. Thereby, the pot seedling is securely held by the vertical feed belt 42 without slipping on the upper part of the vertical feed belt 42.

  The planting part 37 has a grooved plate 371, a planting wheel 372, and a dirt ring 373, respectively. The grooving plate 371 forms a planting groove for planting a pot seedling on the soil surface of the field 9. The planting ring 372 rotates while holding the leaf part of the pot seedling between the pair of discs on the downstream side of the vertical feed belt 42, and the root part of the pot seedling enters the planting groove. Release the leaves of the pot seedlings in position. Thereby, the planting part 37 transplants the root part of a pot seedling in a planting groove | channel. The earth retaining ring 373 backfills the planting groove into which the pot seedling has been transplanted. Thereby, the vicinity of the root part of the pot seedling is covered with soil, and the pot seedling is fixed in the field 9.

<1-3. Configuration of power transmission unit and power conversion unit>
Next, the configuration of the power transmission unit 50 and the power conversion unit 70 of the transplant device 3 will be described. FIG. 6 is a diagram showing the arrangement of each member viewed from the left-right direction of the power transmission unit 50. FIG. 7 is a cross-sectional view of the power transmission unit 50 taken along the line AA. FIG. 8 is a cross-sectional view of the power transmission unit 50 taken along the line BB. FIG. 9 is a top view of the power converter 70 and the push rod 331. FIG. 10 is a diagram illustrating the arrangement of the members when viewed from the left-right direction of the power conversion unit 70.

  As shown in FIGS. 6 to 8, the power transmission unit 50 includes an input shaft 500, a conversion shaft 51, a planting unit output shaft 52, a seedling output shaft 53, a first non-output shaft 54, and a second non-output shaft. 55, a delivery claw output shaft 56, a first rotation shaft 57, and a second rotation shaft 58. The power transmission unit 50 includes gears 501, 511, 512, 513, 514, 521, 531, 541, 551, 552, 561, 571, a first cam 532, a second cam 533, a first lever 61, and a second lever 62.

  A gear 501 is provided around the input shaft 500. Gears 511, 512, 513, and 514 are provided around the conversion shaft 51. A gear 521 is provided around the planting portion output shaft 52. A gear 531, a first cam 532, and a second cam 533 are provided around the seedling support output shaft 53. A gear 541 is provided around the first non-output shaft 54. Gears 551 and 552 are provided around the second non-output shaft 55. A gear 561 is provided around the delivery claw output shaft 56. A gear 571 is provided around the first rotation shaft 57.

  In FIG. 6, the gears 501, 511, 512, 513, 514, 521, 531, 541, 551, 552, 561, 571, and the gear shape of the rack portion 614 of the first lever 61, which will be described later, Only the outer diameter of the gear is shown.

  As shown in FIGS. 6 to 8, in the power transmission unit 50, at least a part of each of the shafts 500 and 51 to 58 and gears 501, 511, and 512 that transmit power between the shafts 500 and 51 to 58. 513, 514, 521, 531, 541, 551, 552, 561, 571, 581, the first cam 532, the second cam 533, the first lever 61, and the second lever 62 are inside the first case 391. Is housed in. The first case 391 is a so-called mission case. As a result, the power transmission unit 50 transmits the input power to the plurality of output shafts inside the first case 391. As shown in FIG. 2, the first case 391 of the present embodiment is disposed in front of the seedling extraction unit 33 and the seedling transfer unit 36.

  The input shaft 500 extends substantially horizontally in the front-rear direction. The front end portion of the input shaft 500 protrudes outside the first case 391. Near the front end of the input shaft 500, the power branched from the traveling power of the traveling unit 2 is input. The power input to the input shaft 500 is power for driving the transplant device 3. The transplant device 3 may have driving power different from that of the traveling unit 2.

  Conversion shaft 51, planting part output shaft 52, seedling cradle output shaft 53, first non-output shaft 54, second non-output shaft 55, feed claw output shaft 56, first rotation shaft 57, and second time Each of the moving shafts 58 extends substantially horizontally in the left-right direction.

  Rotational power of the input shaft 500 is transmitted to the conversion shaft 51 via a cross shaft gear mechanism constituted by the gear 501 and the gear 511. Thereby, the conversion shaft 51 rotates. That is, the gear 501 and the gear 511 constitute a rotation direction conversion mechanism that converts the rotation direction of the rotational power of the input shaft 500.

  The rotational power of the conversion shaft 51 is transmitted to the planting portion output shaft 52 via the gear 512 and the gear 521. The left and right ends of the planting part output shaft 52 protrude outside the first case 391 and supply driving force to the seedling feeding belt part 362 and the planting wheel 372.

  The rotational power of the conversion shaft 51 is transmitted to the seedling output shaft 53 through the gear 513 and the gear 531. The left and right ends of the seedling receiver output shaft 53 protrude outside the first case 391 and supply driving force to the seedling receiver 361.

  The first non-output shaft 54 and the second non-output shaft 55 are rotatably supported inside the first case 391. The rotational power of the conversion shaft 51 is transmitted to the first non-output shaft 54 via the gear 514 and the gear 541. The rotational power of the first non-output shaft 54 is transmitted to the second non-output shaft 55 via the gear 541 and the gear 551.

  Then, the rotational power of the second non-output shaft 55 is transmitted to the delivery claw output shaft 56 via the gear 552 and the gear 561. Thereby, rotational power is transmitted from the conversion shaft 51 to the delivery claw output shaft 56 via the plurality of gears 514, 541, 551, 552, 561. The left and right end portions of the delivery claw output shaft 56 project outward from the first case 391 and supply driving force to the delivery claw 363.

  Through the first cam mechanism constituted by the first cam 532 and the first lever 61, the rotational power of the seedling cradle output shaft 53 is converted into reciprocating rotational power and transmitted to the first rotating shaft 57. . The first cam 532 has an outer cam 532a and an inner cam 532b. The first lever 61 includes a lever shaft 610, a first plate 611, a second plate 612, a cam roller 613, and a rack portion 614. The first plate 611 and the second plate 612 are fixed to each other and supported so as to be rotatable about the lever shaft 610. The cam roller 613 is fixed to the second plate 612. The rack portion 614 meshes with a gear 571 provided around the first rotation shaft 57.

  When the seedling support output shaft 53 rotates, the cam roller 613 comes into contact with the inner peripheral surface of the outer cam 532a and the outer peripheral surface of the inner cam 532b of the first cam 532, so that the first plate 611 and the second plate 612 are lever shafts. It swings around 610. As a result, the rack portion 614 reciprocates around the lever shaft 610, whereby the first rotation shaft 57 reciprocates.

  Both left and right ends of the first rotation shaft 57 protrude to the outside of the first case 391 and are connected to the power conversion unit 70. Thereby, the reciprocating rotational power of the first rotational shaft 57 is input to the power conversion unit 70. Details of the power conversion unit 70 will be described later.

  In addition, the rotational power of the seedling cradle output shaft 53 is converted into reciprocating rotational power via the second cam mechanism configured by the second cam 533 and the second lever 62. Communicated. The vicinity of one end of the second lever 62 is fixed to the second rotating shaft 58. Thereby, the second lever 62 is fixed so as to be rotatable about the second rotation shaft 58. A cam roller 621 is provided near the other end of the second lever 62.

  When the seedling output shaft 53 rotates, the cam roller 621 comes into contact with the second cam 533 so that the second lever 62 swings around the second rotation shaft 58. As a result, the second rotation shaft 58 reciprocates. One end of the second rotation shaft 58 protrudes outside the first case 391 and supplies driving force to the transport mechanism 30.

  As described above, the feeding claw 363 has a configuration that is not provided in a rice transplanter that transplants rice into paddy fields. Therefore, the power transmission part of the rice transplanter does not have a power transmission mechanism to the feed claw output shaft. Since most of the structures of the rice transplanter and the vegetable seedling transplanter are the same, it is possible to increase the production efficiency by using the same members as the rice transplanter for the vegetable seedling transplanter. Therefore, it is desirable to add a structure different from the rice transplanter, such as the feeding claw 363, to the structure of the rice transplanter without changing the positional relationship of other structures.

  When the rice transplanter's mission case is used as it is, another power source is provided for driving the delivery claw 363 or a mechanism for branching the power to the delivery claw 363 is provided outside the mission case.

  The power transmission unit 50 according to the present embodiment accommodates a power branch mechanism to the delivery claw output shaft 56 for supplying driving force to the delivery claw 363 in the first case 391. Therefore, it is not necessary to provide a separate power source for driving the delivery claw 363. As a result, the number of parts is reduced and the transplanter can be reduced in weight. Further, since oil is interposed between the members inside the first case 391, the power branch mechanism is hardly worn on the feed claw output shaft 56.

  In the power transmission section 50 of the present embodiment, the first non-output shaft 54 and the second non-output shaft 55 are provided inside the first case 391 to branch the rotational power of the conversion shaft 51 and to supply the output claw output shaft 56. It is transmitted to. As a result, the design of the power transmission unit 50 other than the delivery claw output shaft 56 and the parts other than the first non-output shaft 54 and the second non-output shaft 55 that are power branch mechanisms to the delivery claw output shaft 56 is changed. It becomes possible to use each part of the power transmission mechanism of a rice transplanter without it.

  As shown in FIG. 9, the left and right ends of the first rotation shaft 57 are connected to the two left and right power conversion units 70. The power conversion unit 70 converts the reciprocating rotational power of the first rotational shaft 57 into the linear motion power of the push rod output shaft 71 described later within the second case 392. As shown in FIGS. 2 and 9, the second case 392 of the present embodiment is disposed on both the left and right sides of the first case 391.

  As shown in FIG. 10, the power conversion unit 70 includes a first rotation shaft 57, a push rod output shaft 71, a pinion 572 provided around the first rotation shaft 57, and a rack 72.

  When the first rotation shaft 57 reciprocates, the reciprocating rotation power of the first rotation shaft 57 is converted into the linear motion power in the front-rear direction by the rack-pinion structure constituted by the pinion 572 and the rack 72, and the rack 72 reciprocates linearly back and forth.

  The push rod output shaft 71 is a columnar member extending forward and backward. The push rod output shaft 71 is supported by the second case 392 so as to be slidable in the front-rear direction. By fixing the rack 72 to the front end of the push rod output shaft 71, the push rod output shaft 71 reciprocates linearly in the front-rear direction together with the rack 72. In the present embodiment, by adopting a rack-pinion structure for the power conversion unit 70, the reciprocating rotational power of the first rotational shaft 57 can be converted into a large back-and-forth reciprocating linear motion.

  As shown in FIG. 9, the rear side ends of the two right and left push rod output shafts 71 are connected via push rod fixing shafts 330 extending in the left and right directions. A plurality of push rods 331 are fixed to the push rod fixing shaft 330. Thereby, the push rod output shaft 71 can transmit power to the push rod 331 without converting power. Therefore, the push rod output shaft 71 performs a linear reciprocating motion in the front-rear direction together with the push rod 331.

  As described above, by outputting the power directly acting on the push rod 331 from the inside of the second case 392, it is not necessary to provide a power amplification mechanism outside the second case 392. Therefore, the transplant device 3 can be reduced in weight. In addition, since oil is interposed between the members in the second case 392, wear of each part of the power conversion unit 70 hardly occurs.

  In the present embodiment, the first case 391 and the second case 392 are separate cases, and a part of the first rotating shaft 57 is exposed to the outside of the case, but the present invention is not limited to this. is not. The first case 391 and the second case 392 are one case connected to each other, and the entire first rotation shaft 57 may be accommodated inside the case.

<2. Modification>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

  Although the transplant device of the above embodiment is a transplant device for onion seedlings, the present invention is not limited to this. The transplanting device of the present invention may be a transplanting device that transplants seedlings of plants other than onions to a field.

  Moreover, although the transplanter of said embodiment was what is called a four-row planting machine which can transplant the pot seedlings for four strips simultaneously, the transplanter of this invention is not restricted to four-row planting. For example, the present invention may be applied to a single-planting, two-planting, six-planting, and eight-planting transplanter.

  Moreover, although the power branched from the power for driving | running | working of a driving | running | working part was input into the power transmission part of the transplanting apparatus of the transplant machine of said embodiment, this invention is not limited to this. The transplant device may have a power generation mechanism separately from the traveling unit.

  Moreover, although the transplanter of said embodiment was a riding type transplanter with which the transplant apparatus was mounted in the traveling part, this invention is not limited to this. It may be a walking type transplanter that does not have a running part.

  Moreover, about the detailed structure of a transplanter, you may differ from the shape shown by each figure of this application. Moreover, you may combine suitably each element which appeared in said embodiment and modification in the range which does not produce inconsistency.

DESCRIPTION OF SYMBOLS 1 transplanting machine 2 traveling part 3 transplanting device 30 transporting mechanism 31 first seedling box transporting path 32 second seedling box transporting path 34 empty box transporting path 35 empty box storage part 36 seedling transfer part 37 planting part 41 lateral feed belt 42 vertical Feed belt 50 Power transmission portion 51 Conversion shaft 52 Planting portion output shaft 53 Seedling stand output shaft 56 Feeding claw output shaft 57 First rotation shaft 58 Second rotation shaft 61 First lever 62 Second lever 70 Power conversion portion 71 Extrusion rod output shaft 72 Rack 331 Extrusion rod 361 Seed receiving stand 362 Seedling feed belt 363 Feeding claw 372 Planting wheel 391 First case 392 Second case 500 Input shaft 501, 511, 512, 513, 514, 521, 531 , 541, 551, 552, 561, 571, 581 Gear 532 First cam 533 Second cam 572 Pinion 613, 621 Cam low La 614 rack

Claims (5)

A transplanting device for transplanting a plurality of pot seedlings held in a seedling box to a field,
A seedling box transport path having a plurality of transport mechanisms for moving the seedling box;
Extruding the pot seedling from the seedling box transported on the seedling box transporting path,
A lateral feed belt for transporting the pot seedling taken out from the seedling box in the left-right direction, and a seedling feed belt portion having a longitudinal feed belt for transporting the pot seedling downward on the downstream side of the lateral feed belt;
A feeding claw for pushing out the pot seedling from the downstream end of the lateral feeding belt to the longitudinal feeding belt;
On the downstream side of the vertical feed belt, planting the pot seedling in a field,
The first case;
The second case,
A power transmission unit configured to transmit input power to a plurality of output shafts in the first case;
In the second case, a power conversion unit that converts reciprocating rotational power into linear motion power;
Have
The plurality of output shafts of the power transmission unit are:
A delivery claw output shaft for transmitting rotational power to the delivery claw;
A first rotation shaft for transmitting reciprocating rotation power to the power conversion unit;
Including
The power conversion unit converts the reciprocating rotational power of the first rotational shaft extending in the left-right direction into linear motion power in the front-rear direction and outputs it to the push rod output shaft,
The extruding rod output shaft transmits power to the extruding rod without converting power, and performs linear reciprocating motion in the front-rear direction together with the extruding rod. The transplant device of claim 1,
The power converter is
A pinion provided around the first rotation shaft;
A rack directly connected to the push rod output shaft and disposed in the front-rear direction;
A transplantation device comprising: The transplant device according to claim 1 or 2,
The power transmission unit is
An input shaft that extends in the front-rear direction and inputs rotational power;
A rotation direction conversion mechanism that converts the rotation direction of the rotational power of the input shaft;
A conversion shaft that extends in the left-right direction and is rotated by the rotational power of the input shaft transmitted through the rotation direction conversion mechanism;
Have
The feeding claw output shaft extends in the left-right direction, and rotational power is transmitted from the conversion shaft via a gear. The transplant device according to claim 3, wherein
Place the pot seedling extruded from the seedling box, further transfer a pot seedling to the lateral feed belt, further comprising a seedling stand,
The plurality of output shafts of the power transmission unit are:
A planting part output shaft for outputting rotational power to the planting part;
A seedling cradle output shaft that outputs rotational power to the seedling cradle;
A second rotation shaft that outputs reciprocating rotation power to the transport mechanism;
Further including
The power transmission unit is
A first cam mechanism and a second cam mechanism for converting rotational power into reciprocating rotational power;
Rotational power of the conversion shaft is transmitted to the planting portion output shaft through a gear provided around the planting portion output shaft and a gear provided around the conversion shaft,
Via the gear provided around the seedling cradle output shaft and the gear provided around the conversion shaft, the rotational power of the conversion shaft is transmitted to the seedling cradle output shaft,
The rotational power of the conversion shaft is transmitted through the gear provided around the delivery claw output shaft, the gear provided around the conversion shaft, and the two gears interposed therebetween. Communicated to
Via the first cam mechanism, the rotational power of the seedling cradle output shaft is converted into the reciprocating rotational power of the first rotational shaft,
The transplanting device, wherein the rotational power of the seedling cradle output shaft is converted into the reciprocating rotational power of the second rotational shaft via the second cam mechanism. An implantation device according to any of claims 1 to 4,
A traveling unit equipped with the transplant device and having traveling power;
Have
The power transmission unit receives a power branched from the traveling power, and is a transplanter.

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